EWC ST 2D zone one wont shut off until zone 2 does

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msrocks
Posts: 1
Joined: Thu Jun 06, 2019 6:38 pm

EWC ST 2D zone one wont shut off until zone 2 does

Post by msrocks » Thu Jun 06, 2019 6:52 pm

Hi,

I have a EWC ST 2D controller and a Honeywell 50061478-004 thermostat our oil guy installed in the winter. Now with the AC running, the first floor-zone 1 will keep running until upstairs zone 2 shuts off. The first floor is set to 74, and at 70 degrees it is still running. I'm not sure if it is a bad thermostat or wired wrong. Do I need to replace thermostat with a TH4110d?

Paul Z.
Posts: 216
Joined: Thu Dec 08, 2011 3:05 pm

Re: EWC ST 2D zone one wont shut off until zone 2 does

Post by Paul Z. » Fri Jun 07, 2019 9:42 am

Call 1800 446 3110 X490 have a few questions

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